Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, Net - Additional Information (Detail)

v3.7.0.1
Intangible Assets, Net - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]          
Amortization expenses of intangible assets $ 456 $ 486 $ 913 $ 972 $ 1,927